AI Matters
Why it matters
Anthropic text watermarks contain bypass flaw on older models
The Decoder Anthropic's watermark rollout leaves a loophole on two older Claude models
Anthropic expanded text watermarking to comply with EU rules but acknowledged developers can bypass it on older Claude 4.6 models.
Why it matters
Watermarking rules meant to identify AI-generated text under EU regulations may be easy to circumvent.
Latest brief · Nov 1, 2026